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Official data from INPI

REGULADOR DE DESCARGA DE METAL FUNDIDO

Arquivada/ExtintaInvention PatentPCT · JP1989000550

Application data

Number

PI8907893

Type

Invention Patent

Filing

06/01/1989

Publication

04/28/1992

PCT

JP1989000550

Progress at the INPI

  1. Filing06/01/89
  2. Publication04/28/92
  3. Examination10/27/92
  4. Allowance01/13/98
  5. Grant08/25/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shinagawa Refractories Co., Ltd.

JP

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Inventors

K. Y. (pessoa física)

JP

M. O. (pessoa física)

JP

T. T. (pessoa física)

JP

T. O. (pessoa física)

JP

Y. S. (pessoa física)

JP

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 01/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

08/25/1998

RPI 1444

Deferimento

#9.1

01/13/1998

RPI 1412

Exigência - art. 36 da LPI

#6.1

02/21/1996

RPI 1316

Solicitação de exame técnico

#4.1

10/27/1992

RPI 1143

Notificação de entrada na fase nacional - PCT

#1.3

04/28/1992

RPI 1117

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